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I've seen this post: Upgrade to Genuine Windows 8 Pro from non genuine Windows 7

But I need something extra. I need to go from 32bit to 64bit. Is that even possible?

My laptop's upgraded to 64bit. Can I use its ISO and just buy a product key on its own? And do a clean install?

Community
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Matthew Grima
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2 Answers2

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You cannot upgrade directly from a 32-bit install to a 64-bit one. You will need to do a wipe + fresh install of Windows 8 x64.

As for the licensing aspect, that's generally off-topic for SU, but whether you used a bootleg Windows 7 in the past has no effect on whether you'll be able to install Windows 8 (as long as you have a legit retail key).

Bigbio2002
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Buy the OEM version of Windows 8 from a retailer, back up your whole system, do a fresh install of Windows 8, then copy the files you want from your backup.

See: http://answers.microsoft.com/en-us/windows/forum/windows_8-windows_install/windows-8-retail-box-version/7fbc820e-a0a4-4080-b04d-e1ab4fa3eaee

Terence Johnson
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